Method to Divide a File or Merge Files Using File Allocation Table (fat)

1. An electronic device, comprising: a storing unit to store a file in a plurality of clusters; a control unit to manage a file allocation table (FAT) to copy data in a first cluster comprising a divide point into a second cluster and to link a FAT entry corresponding to the second cluster to a third cluster comprising a data to be read after reading the copied data in the second cluster.

2. An electronic device, comprising: a storing unit to store file A and B respectively in a first cluster and a second cluster; a control unit to manage a file allocation table (FAT), to link a FAT entry corresponding to the first cluster to the second cluster without any data copying; filling in a portion of an area of a first cluster corresponding to a merge area with dummy data, wherein a last data of a data stream for file A is stored in the first cluster and a first data of a data stream for file B is stored in the second cluster, and the first cluster and the second cluster comprise space to store data into.

3. A digital camcorder, comprising: a storing unit to store a plurality of files in a plurality of clusters; a photographing unit photoelectrically converts an optical signal being entered through a lens unit into an electrical signal and processes the electrical signal; a lens unit forms an optical image of an object being photographed on an optical plane; a lens driving unit drives the lens unit; a pre-processing unit generates, outputs an electric signal that corresponds to the optical image formed on the optical plane and pre-processes the electric signal; a digital signal processor(DSP) processes the pre-processed electric signal and outputs the processed electric signal to the back-end unit; a control unit controls a digital camcorder operation according to user operation commands through a operating unit; a operating unit includes a plurality of buttons to receive user commands; a back-end unit encodes the processed electric signal and outputs the encoded electric signal to an output unit; and an output unit displays the encoded electric signal, wherein the digital camcorder operation is a file merge or a file divide using a file allocation table (FAT) and the control unit controls to manage the FAT, to copy data to be separated from the file in a first cluster comprising a dividing point into a second cluster and to link a FAT entry corresponding to the second cluster to a third cluster comprising data to be read after reading the copied data in the second cluster.

4. The digital camcorder of claim 3 , wherein the video file is at least one of the processed electric signals encoded and not encoded.

5. The digital camcorder of claim 3 , wherein the storing unit stores video file A and B respectively in a first cluster and a second cluster and, the control unit controls to manage a FAT, to link a FAT entry corresponding to the first cluster to a FAT entry corresponding to the second cluster without any data copying, wherein the first cluster is a cluster storing a last data of a data stream for the video file A and the second cluster is a cluster storing a first data of a data stream for the video file B.

6. A method to divide a file stored in a plurality of clusters, the method comprising: copying data to be separated from the file, in a first cluster comprising a dividing point into a second cluster; linking a file allocation table (FAT) entry corresponding to the second cluster to a third cluster comprising data to be read after reading the copied data in the second cluster.

7. The method of claim 6 , wherein the portion of the data in the first cluster is to be read after the remainder of the first cluster.

8. The method of claim 6 , wherein the second cluster comprises: a newly allocated cluster.

9. The method of claim 6 , wherein the linking comprises: storing information about the second cluster into the FAT entry corresponding to the first cluster.

10. The method of claim 6 , further comprising: deleting a portion of the data in the first cluster and filling in an area of the first cluster corresponding to the deleted portion of the data with dummy data.

11. The method of claim 6 , further comprising: filling in an area of the second cluster with dummy data and excluding an area having the copied data.

12. The method of claim 6 , wherein the file is a video stream file.

13. A method to merge files A and B, the method comprising: linking a file allocation table (FAT) entry corresponding to a first cluster into a second cluster without any data copying, wherein a last data of a data stream for file A is stored in the first cluster and a first data of a data stream for file B is stored in the second cluster, and the first cluster and the second cluster comprise space to store data into.

14. The method of claim 13 , wherein the linking comprises: storing information about the second cluster into the FAT corresponding to the first cluster.

15. The method of claim 13 , wherein the first data of a data stream for file B is to be read after the last data of the data stream for file A.

16. The method of claim 13 , further comprising: filling in a portion of an area of a first cluster corresponding to a merge area with dummy data, wherein the merge area is an area at which file A and B are intended to be joined.

17. The method of claim 16 , wherein the portion of the area of the first cluster is an empty area.

18. A non-transitory computer-readable recording medium having embodied thereon a computer program to execute a method to divide a file, wherein the method comprises: copying data to be separated from the file, in a first cluster comprising a dividing point into a second cluster; linking a file allocation table (FAT) entry corresponding to the second cluster to a third cluster comprising data to be read after reading the copied data in the second cluster.

19. A non-transitory computer-readable recording medium having embodied thereon a computer program to execute a method to merge file A and B respectively stored in a first cluster and a second cluster, wherein the method comprises: linking a file allocation table (FAT) entry corresponding to a first cluster into a second cluster without any data copying, wherein a last data of a data stream for file A is stored in the first cluster and a first data of a data stream for file B is stored in the second cluster, and the first cluster and the second cluster comprise space to store data into.